Ok, I was able to reproduce it. Apparently Nautilus freezes completely if the link you are trying to drag to it from Firefox has a very slow server, or the server does not respond. It seems to go into a "wait" mode that completely freezes ALL of its windows.
-- Nautilus crashes https://launchpad.net/bugs/94492 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
